Ore-feeder



(No Model.) E. A.' HUNTINGTON.

ORE FEEDER.

No. 392,562. `Pateaatd Nov. 6, 1888.

Urrnn STATES ArnN'r tries@ FRANK A. HUNTINGTON, OF SAN FRANCISCO,CALIFORNIA.

ORE=FEEDER.

SPECIFICATION forming part of Letters Patent No. 392,562. dated November6, 1888.

Application filed March 30, 1887.

To all whom it may concern,.-

Be it known that I, FRANK A. HUNTINGTON, of the city and county of SanFrancisco, State of California, have invented an Improvement inOre-Feeders; and I hereby declare the following to be a full, clear, andexact description ofthe same.

My invention relates to a device for feeding ore to stamp or othercrushing mills, or for feeding any material where it is necessary t0have a regular discharge; and it consists in certain details ofconstruction, all of which will be hereinafter claimed, and more fullydescribed by reference to the accompanying drawings, in which- Figure 1is a vertical section taken through the hopper, the table, and theoperating-cam. Fig. 2 is a front View of the apparatus, showing theadjustable cam -and adjusting arm or bar.

A is a hopper, which is suitably supported upon a frame-work, and thismay either be stationary or mounted upon wheels, so as to be moved fromplace to place. In the present case I have shown this hopper with sidestapering or inclining toward each other and the back inclining towardthe front, which is nearly or quite vertical, so that the ore isconcentrated at the bottom and is delivered upon an inclined table, B.This table extends beneath the bottom of the hopper, having such aninclination as to discharge to the front. An adjustable gate, O, isfitted above the front end of the table, so as to control the dischargein the usual manner. This table has its front end supported upon arocking bar, E, and its rear end upon a similar rocking bar or link, F,these two being fulcrnmed or pivoted at the bottom and having theirupper ends connected by half-round sockets or by links or other suitabledevices with the bottom of the table, so that as they are oscillatedbackward and forward the table slides beneath the hopper and in linewith the bottom. The back of the hopper has agroove or socket, intowhich the upper edge of a plate, b, tits, or it may be otherwise hingedor connected thereto, and the lower edge of this plate rests in asimilar groove in the surface of the table, so that as the table movesslowly back and forward the lower edge of this plate is moved with it,the upper edge turning in the groove or channel Serial No. 233,061. (Nomodel.)

which forms the hinge or fulcrum. The ore passing out ofthe hopper fallsonto the front end of the table. As the table moves forward it carriesthis ore along, allowing more of the ore to come out from the hopper,and as it is drawn backward the ore is prevented from moving back withit, and this causes the ore which is already on the front of the tableto drop off as the table moves back. The next motion forward carries theore toward the front and more falls in behind it from thehopper and thedischarge becomes steady and continuous with each oscillation of thetable.

In order to oscillate the table and regulate its oscillations, the linkF has an oval slot, G, made in its center, and through this a shaft,

H, passes, having a cylinder, I, iiXed to it.v

This is made to act as an eccentric by boring or coring it from thecenter of one end to a point near one side at the opposite end, so thatas the shaft H is rotated by any suitable power if the cylinder is movedso that the point where the shaft is in the center ofthe cylinder iswithin the slot G there will be no motion conveyed to the link or rockerarm F, but by moving the cylinder along the cam until that portion whichis eccentric to the shaft is within the oval slot G4 the greatest throwwill be given to the oscillating link and the table will be given thegreatest motion. By sliding the cylinder along the shaft any degree ofthrow may be given to the table between this point and that of no throw,the adjustment of the cylinder being accomplished at any time withoutstopping the operation of the machine. In order to move this cylinderalong the shaft a collar, J, surrounds one end of it, and an arm, K,projects to one side, having an arm or rod, L, extending out at rightangles from it and passing through a guide, as shown at M. The arm L hasa suitable handle by which it-may be moved, so as to cause the cylinderI to slide upon its shaft H, and notches N upon the bar L will engagewith a catch, so as to hold the cylinder I at any desired point. A screwor cam may be employed in place of the notched bar, the action beingessentially the same. The shaft H may be simply a rough square shaftpassing through the cylinder I, which is sufficiently loose to slideback and forth upon it while being caused to rotate by the rotationofthe shaft, or the shaft may be turned and IOO have a feather uponwhich the cylinder slides; but the first mentioned is the cheapestconstruction. By this mechanism it will be seen that the feed may beregulated to any degree of nicety by altering the throw of the eccentricand varying the movement ofthe table.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. An ore-feeder comprising a stationary hopper and an inclined tablebeneath upon which ore is deposited from the hopper, links or arms uponwhich this is supported, one of said links having on oval slot throughit, a drivingshaft, and a cylinder mounted obliquely to the axisadjustable longitudinally thereon and extending through said slot,whereby the throw may be changed while the feeder is in operaL tion,substantially as herein described.

2. The hopper or receiver having a groove 2o or socket in its rear andthe reciprocating table moving beneath said hopper and having a grooveor socket in its upper surface, in combination with a plate interposedbetween said hopper and table, with its upper and lower ends engagingthe grooves or sockets therein, substantially as described.

In witness whereof I have hereunto set my hand.

FRANK A. HUNTINGTON.

1Witnesses:

S. C. STRooK, J. H. BLooD.

